LONDON/DOHA (Reuters) – Qatar said on Monday that a U.S. media report had shown that the United Arab Emirates was involved in an alleged hack of Qatar’s state news agency in late May that helped spark a diplomatic crisis in the Gulf. The UAE said the Washington Post report was untrue, and that four Arab powers were discussing imposing new sanctions on Qatar. Saudi Arabia, the UAE, Bahrain and Egypt all cut off diplomatic and transport ties with Qatar on June 5, accusing it of financing Islamist militant groups and allying with their regional adversary Iran – allegations Qatar denies.